Midnight Club 3 DUB Remix Vehicle Randomizer

This is a very simple vehicle randomizer for Midnight Club 3 that changes your active vehicle at each race finish.

Your vehicle modifications will be retained as the vehicle is changed.

The seed is generated from your profile name and stored inside the save file.

Installation

1. Get the latest build of PCSX2 Fork with Plugins here (MSVC AVX2 build should be good for most people)

2. Place MC3CarRandomizer.elf in the PLUGINS directory of PCSX2 Fork

Game compatibility

Currently it only works with the MC3 Remix US build (CRC: 0x60A42FF5, ID: SLUS-21355) for PS2.

Is it possible to run this on a PS2?

As of now, not yet. There is a tool made by ermaccer that could inject it into the executable, however, it's not fully stable because it doesn't relocate the code (it relies on a fixed section and prays that it doesn't get overwritten by the game).

What about Xbox or PSP builds?

PSP builds are very much possible. This code should be 1:1 portable, just needs pointer changes and project configuration to create a PRX file.

As for the Xbox - this is where it gets tricky. It is possible to build a trainer/DLL that injects the code, however, as the documentation is scarce, it's hard to say.

How does this work?

Short explanation

• Randomizer seed is generated from your profile name and stored in your save file (overwrites one of the strings used in online mode chat).

• Vehicle changes when you finish a race (applies with each loading screen).

• Vehicle parts are retained no matter which vehicle you have selected in the garage.

Long explanation

The randomizer hooks a few key events in the game:

1. Vehicle configuration setting/application - this is where the vehicle override gets applied

2. Career data loading - this is where the seed data and the active vehicle is read from the save data

3. Career data saving - this is where the seed data and the active vehicle is stored into the save data

4. Save creation - this is where the seed is generated

5. Race finish - this is where the vehicle randomization is triggered

6. Race over screen - this is where verification that you've randomized the vehicle happens

The vehicle list is obtained from a vehicle list pointer (at 0x006E0170 in the Remix US build) that the game creates from tune/vehicle/vehicle.lst.

The vehicle count is found right next to the vehicle list pointer as a 16-bit integer.

The randomizer simply selects a number within the available count range, and the needed data is passed from the list into the override.

The RNG function itself is pulled from NFS Most Wanted (raw bytes in bRandom.c).